 $(function () {
        $('#fullpage').fullpage({
            verticalCentered: false,
            scrollingSpeed: 1000,
            navigation: true,
            navigationPosition: "right"
        })

        var index = 0;
     var length = $('#fullpage section .index-text .ideaText').length;

     $('#fullpage section .index-text .ideaText').hide();
     function circul() {
         if (index>=length){
             index =0;
         }
         $('#fullpage section .index-text .ideaText').eq(index).fadeIn(3000).siblings().fadeOut();
         index++;
     }
    setInterval(circul,5000)
    });